01-05-2009
I don't understand how FTP is insisting for encryption.
But you need to use gpg. It comes with most Linux distros and it is available on sunfreeware for Solaris.
First you need some keys of your own. You can do without, but you will be constantly fighting the program. So do:
pgp --gen-key
It will ask questions...take the defaults where provided and answer the others.
Next import that key you have:
pgp --import somefilecontainingkey
Now you should be able to list that key you imported...
pgp --list-keys
Sign the key you imported to assert that you trust it. This is why you needed to generate your own keys.
pgp --sign-key keyid
There should be an email address associated with that key. Let's say it is joe.blow@sample.com. Also let's say you have a file called secret.txt to send. So do:
gpg --recipient joe.blow@sample.com --encrypt secret.txt
This creates a file called secret.txt.pgp. Now you ftp secret.txt.pgp to the other end. When Joe Blow wants to decrypt the file, he will use:
gpg secret.txt.gpg
And a file called secret.txt will appear in his directory.
I have tried all of these steps between a Linux and a Solaris system and they worked for me. Your mileage may vary depending on your setup.
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LEARN ABOUT DEBIAN
gnupg::key
GnuPG::Key(3pm) User Contributed Perl Documentation GnuPG::Key(3pm)
NAME
GnuPG::Key - GnuPG Key Object
SYNOPSIS
# assumes a GnuPG::Interface object in $gnupg
my @keys = $gnupg->get_public_keys( 'ftobin' );
# now GnuPG::PublicKey objects are in @keys
DESCRIPTION
GnuPG::Key objects are generally not instantiated on their own, but rather used as a superclass of GnuPG::PublicKey, GnuPG::SecretKey, or
GnuPG::SubKey objects.
OBJECT METHODS
Initialization Methods
new( %initialization_args )
This methods creates a new object. The optional arguments are initialization of data members.
hash_init( %args ).
short_hex_id
This returns the commonly-used short, 8 character short hex id of the key.
compare( $other, $deep )
Returns non-zero only when this Key is identical to the other GnuPG::Key. If $deep is present and non-zero, the key's associated
signatures, revocations, and revokers will also be compared.
OBJECT DATA MEMBERS
length
Number of bits in the key.
algo_num
They algorithm number that the Key is used for.
usage flags
The Key Usage flags associated with this key, represented as a string of lower-case letters. Possible values include: (a)
authenticate, (c) certify, (e) encrypt, and (s) sign.
A key may have any combination of them in any order. In addition to these letters, the primary key has uppercase versions of the
letters to denote the _usable_ capabilities of the entire key, and a potential letter 'D' to indicate a disabled key.
See "key capabilities" DETAILS from the GnuPG sources for more details.
hex_data
The data of the key. WARNING: this seems to have never been instantiated, and should always be undef.
pubkey_data
A list of Math::BigInt objects that correspond to the public key material for the given key (this member is empty on secret keys).
For DSA keys, the values are: prime (p), group order (q), group generator (g), y
For RSA keys, the values are: modulus (n), exponent (e)
For El Gamal keys, the values are: prime (p), group generator (g), y
For more details, see: http://tools.ietf.org/html/rfc4880#page-42
hex_id
The long hex id of the key. This is not the fingerprint nor the short hex id, which is 8 hex characters.
creation_date_string
expiration_date_string
Formatted date of the key's creation and expiration. If the key has no expiration, expiration_date_string will return undef.
creation_date
expiration_date
Date of the key's creation and expiration, stored as the number of seconds since midnight 1970-01-01 UTC. If the key has no
expiration, expiration_date will return undef.
fingerprint
A GnuPG::Fingerprint object.
signatures
A list of GnuPG::Signature objects embodying the signatures on this key. For subkeys, the signatures are usually subkey-binding
signatures. For primary keys, the signatures are statements about the key itself.
revocations
A list of revocations associated with this key, stored as GnuPG::Signature objects (since revocations are a type of certification as
well). Note that a revocation of a primary key has a different semantic meaning than a revocation associated with a subkey.
revokers
A list of GnuPG::Revoker objects associated with this key, indicating other keys which are allowed to revoke certifications made by
this key.
SEE ALSO
GnuPG::Fingerprint, GnuPG::Signature, GnuPG::Revoker,
perl v5.12.4 2010-06-07 GnuPG::Key(3pm)